Fleet Master Truck & Trailer Repair is a full-service diesel truck repair and maintenance facility in Bedford Park and Melrose Park, Illinois, specializing in transmission and clutch repair and maintenance services for diesel trucks and fleets. Our team of skilled technicians understands the unique challenges faced by diesel truck owners and fleet managers, and we are dedicated to providing reliable, high-quality service to keep your vehicles operating at peak efficiency.
Transmission Repair and Maintenance Services for Diesel Trucks
Transmission slipping? Grinding into gear? Whining differential? These problems don't fix themselves — and the longer they run, the more expensive they get. Fleet Master handles full transmission rebuilds, differential rebuilds, and clutch repair for heavy-duty diesel trucks at our Bedford Park and Melrose Park locations, serving the greater Chicago area.
Request Service | Call 708-415-0251
Signs Your Transmission Needs Service
Don't wait for a full failure on the road. Bring it in if you're experiencing:
- Slipping gears or delayed engagement
- Harsh or erratic shifting
- Grinding or clunking when shifting
- Transmission fluid leaks or burnt fluid smell
- Transmission warning light or fault codes
- Loss of power through the drivetrain
- Difficulty getting into gear from a stop
- Overheating under normal load conditions
Signs Your Differential Needs Service
- Whining or howling noise that changes with speed
- Clunking on acceleration or deceleration
- Vibration through the driveline
- Metal contamination in gear oil
- Excessive backlash or loose feel in the driveline
- Oil leaks from the differential housing
Any of these is a reason to get it looked at before a differential failure takes out your axles.
Transmission Repair & Rebuild Services
Fleet Master's technicians diagnose transmission issues with computerized diagnostic equipment before any teardown — so we know exactly what's wrong before we start. Whether it's a repair or a full rebuild, we'll tell you which makes more sense for your truck and your budget.
Services include:
- Transmission diagnostics & fault code analysis
- Transmission fluid change & filter replacement
- Transmission repair (internal components, solenoids, valve body)
- Full transmission rebuild — clutch packs, steels, seals, gaskets
- Torque converter inspection & replacement
- Valve body servicing & solenoid testing
- Bearing, bushing & gear replacement
- Endplay measurement & internal clearance checks
- Transmission replacement
- Post-rebuild road test & performance verification
Differential Rebuild & Drivetrain Repair
Differential work is precision work. Incorrect pinion depth, backlash, or preload causes rapid gear wear and premature failure. Fleet Master's technicians use the correct specifications, tooling, and measurement procedures to ensure your differential is set up right — not just reassembled.
Services include:
- Ring & pinion gear replacement & setup
- Bearing & seal replacement
- Carrier inspection & rebuild
- Backlash & gear pattern adjustment
- Pinion depth & preload setup
- Lubrication system inspection & fluid replacement
- Axle shaft & yoke inspection
Clutch Repair & Replacement
A failing clutch costs you fuel efficiency and puts extra stress on the transmission. Fleet Master handles the full scope of clutch service for manual transmission diesel trucks — from adjustments to complete replacement.
Services include:
- Clutch inspection & diagnostics
- Clutch adjustment
- Clutch replacement
- Flywheel resurfacing & replacement
- Hydraulic clutch system repair & maintenance
- Clutch cable & linkage adjustment & replacement
Makes & Transmissions We Service
We service transmissions and differentials on all major heavy-duty trucks and drivetrain configurations, including:
- Freightliner, Peterbilt, Kenworth, International, Volvo, Mack, Western Star
- Hino, Isuzu, and medium-duty commercial trucks
- Eaton Fuller manual & automated transmissions
- Allison automatic transmissions
- Meritor & Dana differentials
- Spicer driveline components
- Cummins, Detroit, Paccar, and Volvo-powered platforms
Related Services
Transmission and drivetrain problems often show up alongside other issues. We can handle it all in the same visit.
- Driveline Repair — U-joints, driveshafts, and carrier bearings that connect your transmission to the axles
- Axle Repair — Axle shaft, wheel-end, and hub service when differential issues extend outward
- Engine Repair & Overhaul — When drivetrain damage is connected to engine issues
Serving the Chicago Metro Area
Bedford Park — 6363 W 73rd St | 708-415-0251 - Less than 5 miles from I-55, ~3 miles from I-294. Full-service truck and trailer repair.
Melrose Park — 4825 W Lake St | 331-243-7877 - Off I-290, minutes from I-294. Heavy-duty truck repair for the west suburbs.
Serving Bedford Park, Bridgeview, Oak Lawn, Summit, Cicero, Melrose Park, Bellwood, Franklin Park, and the greater Chicago area.
Your Truck Shouldn't Sit. Neither Should Your Call.
Every hour a truck is down is money out of your pocket. Fleet Master's technicians are ready at our Bedford Park and Melrose Park locations — and our mobile units cover a 50-mile radius when you can't come to us.
Call us now and we'll get you in fast.
Bedford Park: 708-415-0251Melrose Park: 331-243-7877
Mon–Fri: 7:30am–5:30pm | Saturday: 7:30am–1pm
Frequently Asked Questions
How do I know if my transmission needs a rebuild vs. a repair? It depends on what's failed and how far the damage has spread. A single solenoid or valve body issue is often a repair. If clutch packs, gears, or bearings are worn throughout, a rebuild is usually more cost-effective long-term than chasing individual failures. We'll diagnose it first and give you a straight recommendation.
What's the difference between a transmission repair and a transmission rebuild? A repair addresses a specific failed component — a solenoid, a sensor, a seal. A rebuild involves a full teardown, inspection of all internal components, and replacement of anything worn to restore the transmission to like-new performance. Rebuilds are typically recommended when the transmission has high mileage or multiple internal failures.
How long does a transmission rebuild take? Most transmission rebuilds are completed in 3–5 business days depending on parts availability and the extent of the work. Call ahead and we'll give you a realistic timeframe for your specific truck.
Can you rebuild differentials on-site or does it need to go somewhere else? We handle differential rebuilds in-shop at our Bedford Park and Melrose Park locations. We don't outsource drivetrain work — it's done here by our own technicians.
What causes differential failure? The most common causes are lack of lubrication from delayed fluid changes or leaking seals, overloading, and worn bearings or gears from extended high-mileage service. We'll identify the root cause during teardown so the rebuild holds.
Do you service Eaton Fuller and Allison transmissions? Yes. We service both Eaton Fuller manual and automated transmissions and Allison automatics — two of the most common heavy-duty platforms in the Chicago fleet market.
Do you offer mobile transmission diagnostics? Yes. Our mobile units can run transmission fault code diagnostics and assess driveline issues on-site. Rebuilds and major repairs require a shop visit. Call 708-415-0251 and we'll tell you what can be handled at your location.
Heavy-Duty Diesel Mechanic Specialists
Gleb Moiseev
"Highly recommended this shop. After engine overhaul my 2012 Cascadia has a new heart. Reasonable prices for fairly prompt work. Thank you guys. "
Kenneth Foreman
"Love this shop! Andrei the fleet manager is the best and will make sure everything gets taken care of with the truck! Highly recommend! Won’t regret it. Easy in and out shop in the Chicago land area!"
Misha Nehoda
"Whether you need an oil change, brake repair, tire repair, they've got you covered. The guys do their job quickly, even when I showed up at the last moment, without calling in advance."
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